Like all Acestridium species, this is a very slender and elongated fish. Specimens of up to 4.9 centimetres (1.9 in) SL have been recorded. It can most readily distinguished from its congeners by its rather homogenous brown coloration (as opposed to having striped markings) and the very low number of jaw teeth.
- Froese, Rainer and Pauly, Daniel, eds. (2014). "Acestridium colombiense" in FishBase. August 2014 version.
- Retzer, Michael E. (2005). "Description of a new species of Acestridium (Siluriformes: Loricariidae) from Colombia" (PDF). Zootaxa. 972: 1–6.
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